js__backbone__codeschool1/src/controllers.php

<?php

use Silex\Application;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;

const BACKBONE = '/client/index.html';

$app->get('/', function (Application $app) {
  return $app->redirect(BACKBONE);
});
$app->get('/server', function (Application $app) {
  return $app->redirect(BACKBONE);
});
$app->get('/todos/{id}', function (Application $app, int $id) {
  /** @var \Model $model */
  $model = $app['model'];
  $todos = $model->load();
  $todo = $todos[$id] ?? NULL;
  return $app->json($todo);
});
$app->put('/todos/{id}', function (Application $app, Request $request, int $id) {
  /** @var \Model $model */
  $model = $app['model'];
  $data = json_decode($request->getContent(), true);
  $created = $model->save($data);
  return new Response('Saved', $created ? Response::HTTP_CREATED : Response::HTTP_OK);
});
$app->match('{url}', function ($url) {
  var_dump($url);
});